<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8">
		<title></title>
		<style type="text/css">
			div{
				border:solid 1px red;
				height: 30px;
				width: 300px;
				margin-top: 20px;
			}
			
			span{
				border:solid 1px blue;
				height: 30px;
				width: 100px;
				margin-top: 20px;
				margin-bottom: 20px;
				margin-left: 10px;   
				margin-right: 30px;
				margin: 20px;
				/* display: inline-block; */
			}
		</style>
	</head>
	<body>

		<div >
			我是div
		</div>

		<span>我是span  </span>
		<span>我是span  </span>
		<span>我是span  </span>
		<span>我是span  </span>
		<span>我是span  </span>
		<span>我是span  </span>
		<span>我是span  </span>
		<span>我是span  </span>
		<span>我是span  </span>
		<span>我是span  </span>
		<span>我是span  </span>
		<span>我是span  </span>
		<span>我是span  </span>
		<span>我是span  </span>
		<span>我是span  </span>
		<span>我是span  </span>
		<span>我是span  </span>
		<span>我是span  </span>
		<span>我是span  </span>
		<span>我是span  </span>
		<span>我是span  </span>
		<span>我是span  </span>
		
		

	</body>
</html>
